ES2292118T3 - METHOD FOR ESTABLISHING A CALL ON A TELECOMMUNICATIONS NETWORK; TELECOMMUNICATIONS NETWORK; AND CONTROL DEVICE FOR PACKAGE NETWORKS. - Google Patents

Abstract

Method for establishing a call in a telecommunications network (100), the telecommunications network (100) comprising a first and a second section (110, 120) of packet network, a section (140) of TDM transit network coupled to the first and second sections (110, 120) of packet network and a network (130) of wide area packets coupled to the first and second sections (110, 120) of packet network, the method comprising the steps of: - providing, in a first terminal equipment (112) coupled to said first packet network section (110), dialed digits, the dialed digits representing a directory number of a second terminal equipment (122) coupled to said second section (120) packet network; - initiate the establishment of a first connection through the TDM transit network (140) with the second packet network (120) according to said dialed digits, in which at least one message or element is transmitted during the call establishment information to the second packet network section (120), the at least one message or information element of the packet capabilities of the first terminal equipment and / or an address of a first control device (116, 114A) being indicative that controls the call in the first section (110) of packet network; - in the second network (120), receiving said at least one message or information element in a second control device (126, 124A) that controls the call in the second section (120) of packet network; and - establishing, by means of the first and second control device (116, 114A, 126, 124A) and the information extracted from said at least one message or information element, a second connection (10) between the first and second equipment ( 112, 122) terminal through the network (130) of wide area packets.

Description

Method to establish a call on a network telecommunications; telecommunications network; and device control for packet networks.

This application refers to and claims the benefit of the US provisional joint patent application number 60 / 551,586, filed on March 9, 2004, entitled " Method to Identify Calls Between Remote VoIP Subscribers Connected via Transit PSIN and Reconnect as Endto -End VoIP ".

The present invention relates to a method to establish a call in a telecommunications system, a telecommunications network and a network control device of packages. More particularly, the present invention relates to a method, network and device optimized to facilitate calls in packet networks in mixed TDM and packages.

Generally, communications networks Modern carry two types of traffic or data. The first is the traffic that is transmitted or delivered to a user or subscriber, and that The user usually pays. This type of traffic is known widely as user traffic or subscriber traffic. The second is the traffic originated by network administration applications when sending and receiving administration data from network elements, known as administration traffic.

In telecommunications, administration traffic is also known as signaling traffic. The term "signaling" refers to the exchange of signaling messages between various network elements such as database servers, local exchanges, transit exchanges and user terminals. A protocol widely known for transferring such signaling messages in public switched telephone networks (PSTN, Public Switched Telephone Network) is the signaling system 7 (SS7, Signaling System), also referred to as system common channel signaling 7 (CCS7 Common Channel Signaling System 7 ).

Signaling system 7 as specified by the International Telecommunications Union (ITU) in the standards of the Q.700 series, provides all signaling tasks in the Current voice-oriented telecommunications networks. Plus specifically, the SS7 provides for example:

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establishment, administration and basic call disconnection;

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enhanced call features such as call forwarding, display of name / number of the calling party, and automatic redial (return of call);

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accounting and billing;

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database operations for services such as authentication, roaming , free call and special rate services, and number portability;

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network administration for the SS7 network and their connections; Y

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signaling unrelated calls, enabling services such as short message service (SMS, Short Message Service), ISDN supplementary services and user to user signaling (UUS User to User Signaling).

With the advent of telecommunication networks based on "next generation" packets, and in particular networks based on Internet Protocol (IP, Internet Protocol ), ITU and other standards bodies, such as IETF, ESTSI and 3GPP, They developed new support and signaling protocols.

The functional architecture of such next generation networks (NGN, Next Generation Networks ) seeks to provide a technology-independent architecture to support multimedia services. The intention is to support a wide range of voice, data and video services while providing interworking with existing PSTN ( Public Switched Telephone Network ) and cellular / wireless networks, also referred to jointly as time division multiplexing (TDM) networks. Time Division Multiplex ), and / or with existing devices.

Currently, PSTN, or TDM, networks dominate voice telephony globally. While IP-based networks and their telephony applications through voice over IP (VoIP) protocols are expanding, PSTN-type networks, which are still adequate to provide reliable voice services, will lose so Your domain gradually. It is expected that the two types of networks will coexist and interwork in numerous ways in the coming decades.

In particular, the PSTN infrastructure will dominate Long distance and international calls. Therefore,  many of the rules and regulations established for PSTN operations will prevail in mixed environments. This is particularly true for unique addressing parts or their telecommunications equipment, respectively. While the IP networks can support various ways of addressing a part called, for example by a symbolic name such as a email address or resource identifier SIP uniform, a PSTN can only treat phone numbers like those designed in numbering plans such as the plan of ITU-T E.164 international numbering.

If, for example, a PSTN subscriber wishes establish a connection with a subscriber of an IP network, the subscriber PSTN has only one way to address the IP subscriber, that is, dialing digits, even though the IP subscriber can have the Dialing capacity by name. Therefore, you need to assign to IP subscribers who want to be able to receive calls from subscribers PSTN a regular PSTN directory number.

In another example, in which a PSTN subscriber is represented within the IP network by a name, and the IP subscriber You can address this PSTN subscriber by name, before delivering this call to a PSTN switch, the name has to be converted in digits Of course, the PSTN subscriber can, instead or additionally, address from within the IP network through the regular PSTN directory number.

Therefore, if a first subscriber of a First IP network wants to call a second subscriber, it will be necessary that the first subscriber uses digits in order to route the call in the interworking network arrangement of PSTN predominance. If the second subscriber is subscribed to a second IP network, then crossing the PSTN does not provide any benefits but rather limits the connection capabilities to the set of PSTN capabilities, that is, none of the network features Advanced IPs such as exchanging data, images or video they will be available even if both subscribers are, in fact, IP subscribers.

There are several other scenarios in which a communication between two IP subscribers inevitably goes through undesirably a section of PSTN network at least once.

It is therefore an object of the present invention provide a novel method to establish calls in a mixed PSTN / IP environment. It is an additional object of the present invention provide a novel network arrangement that facilitates calls in a mixed PSTN / IP environment. It is still another object of the invention provide a novel network node to support calls in a mixed PSTN / IP environment.

According to the above objectives, the invention provides a method to establish a call in a network of telecommunications, the telecommunications network comprising a first and second packet network section, a section of TDM transit network coupled to the first and second network sections of packets, and a wide area packet network coupled to the First and second packet network sections. The method comprises the stages of:

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provide, in a first team terminal coupled to said first packet network section, dialed digits, representing the dialed digits a number of directory of a second terminal equipment coupled to said second packet network section;

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start setting up a first connection, through the TDM transit network with the second packet network according to said dialed digits, in which during the call establishment is transmitted at least one message or information element to the second packet network section, the at least one message or information element being indicative of the package capabilities of the first terminal equipment and / or a address of a first control device that controls the call in the first packet network section;

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in the second network, receive said at least one message or item from information in a second control device that controls the call in the second packet network section; Y

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establish, through the first and second control device and the information extracted from said at minus a message or information element, a second connection between the first and second terminal equipment through the network of wide area packages.

A network is also provided according to the claim 6 and a control device according to the claims 11 and 12.

In a preferred embodiment, the resources of the TDM transit network section used during establishment  Call through the TDM transit network are released once that the at least one message or item is transferred from information.

In another preferred embodiment, the at least one message or information element is indicative in addition to a provider of said first terminal equipment. This is useful for allow the detection of the provider of the first terminal equipment in the second network to enable features and services additional vendor specific if, for example, the vendor of the first terminal equipment is also the supplier of the second terminal equipment In general, provider information can be used to indicate the compatibility of the terminal equipment with a set of non-standard features and services for allow compatible terminals to use such features and services (end to end).

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In another preferred embodiment, the at least one message or information element is the parameter information from user to user information (UUI, User to User Information) or transport parameter (APP Application Transport Parameter) of the ISUP protocol. These two parameters by way of example allow the transfer of various types of user-specific information and can, for example, be part of the ISUP IAM message used to establish the first connection. These parameters can also be used in ACM and ANM ISUP messages to transmit similar information from the second to the first packet network section. Another suitable parameter is known as the network transport parameter. The network transport mechanism can be used to send information across the network in a transparent manner, without involving a call establishment. The objective is to send end-to-end parameters through the network, without the intermediate exchanges having to process the message.

In an exemplary embodiment, the parameter of application transport can convey the capabilities of package of the first user equipment and / or the address of a first control device that controls the call in the first packet network section encoded as ISDN subaddress.

According to the present invention also provides a telecommunications network comprising means for Execute the inventive method. The invention further provides a control device suitable for packet networks that can Facilitate the inventive method.

An advantage of the present invention lies in your ability to connect packet subscribers, for example, VoIP subscribers and their advanced terminal equipment over the network of packets in situations where a subscriber of the network of calling packages (and the calling subscriber's service network) do not is aware of the fact that the called subscriber is also a subscriber of the packet network and that, consequently, the call is established through TDM transit networks that use the dialed digits of a PSTN directory number assigned to the called subscriber.

In turn, this avoids multiple conversions. protocol that occur when the call is passed from the network packets to the TDM network and back to the packet network, improving thus the quality of the entire connection.

Another advantage of the present invention is that establishing connections initially over a TDM network existing, the features provided by this network existing, such as number translation services or number portability, can be provided to the IP subscriber who call.

The invention also allows the release of resources. TDM once the network connection has been established packets, thus reducing the burden of the TDM network. Preferably, only two messages (the initial establishment message, for IAM example, and your answer, for example ACM or REL) need cross the TMD network to allow subscribers to connect packets through the packet network. The present invention it also allows subscribers to use the characteristics of the packet network not supported by existing TDM connections, such as high bandwidth, high voice quality coding and video, personalized call bell and visual ID of the person What is it calling?

Depending on the regulation imposed by the national or international authorities, VoIP calls can be exempt from the rigid regulation that governs networks TDM

The present invention can be used in a manner advantageous in Centrex IP environments in which the calling party and The call are connected to different switchboards.

The invention will now be described in greater detail in the form of advantageous embodiments that are They understand best according to the attached drawings.

Figure 1 shows a representation schematic of a network arrangement according to the invention, and a flow  of call, in which the call establishment is controlled through catwalks.

Figure 2 shows a representation schematic of the network arrangement of figure 1, and a flow of call, in which the call establishment is controlled by software switches medium.

Figure 1 shows an exemplary telecommunications network 100 according to the invention. The telecommunications network 100 comprises a first and second packet network sections 110 and 120, which can be implemented as IP networks. The first packet network section 110 serves a terminal equipment 112 of the first packet subscriber, and the second packet section 120 serves a terminal equipment 122 of the second packet subscriber. The packet network sections 110 and 120 employ various network nodes to provide services, such as software switches 114, 124 and gateways 116, 126 TDM. By means of gateways 116, 126 TDM, both packet network sections 110, 120 are coupled to a section 140 of TDM network, which can comprise switching equipment 142, 144 such as switching offices (tandem), transfer points signaling etc., as is widely known in the art. Computers 142, 144 and TDM switching interfaces internal to the TDM network 140 may be based on TDM technology or technology asynchronous transfer mode (ATM, Asynchronous Transfer Mode).

The packet network sections 110, 120 are further coupled by means of packet switching equipment 118, 128 to a network 130 of wide area packets such as the Internet. Packet switching equipment 118, 128 may comprise routers and switches, as is widely known in the art.

It will be described below, with reference to the numbers 1 to 10, a sequence of events that occur in the network 100. It will be noted that numbers 1 to 10 do not indicate a flow of full call but instead show events, messages and general notifications that facilitate the inventive method.

The procedure begins with the subscriber A dialing the PSTN directory number of the subscriber B using, by example, a numeric keypad of the first terminal equipment 112, which it can be an IP-enabled phone such as a SIP terminal, or any other IP-enabled terminal equipment such as a PC With proper software. The term "terminal equipment" also may refer to gateways and other routing equipment that they try to establish calls from the first 110 IP network to the second network 120 IP using the routing capabilities of the 140 TDM network.

In stage 1, it generates and provides a corresponding establishment message, for example a message SIP: INVITE, to a first software switch 114 by means of the First section 110 packet network.

In stage 2, a call agent residing in the first software switch 114 propagates the establishment of call to the first gateway 116 TDM.

In step 3, the first TDM gateway 116 sends a call establishment message to the TDM network section 140 using any known TDM signaling protocol such as ISDN, ISDN user part (ISUP, ISDN User Part ) or user part telephony (TUP telephone User Part). This call establishment message generated by the first TDM gateway 116 contains any information element or parameter that will be transparently propagated through the TDM network section 140. In such information element or parameter the following information will be placed: an indication that the first packet network section 110 supports the inventive method; an address, for example an IP address, of the control device that controls the call in the first section 110 of the packet network, which in this case is the first gateway 116 TDM; and / or a unique call reference to identify the ongoing call on the first gateway 116. It is understood that some of this information may be transmitted implicitly. For example, the presence of the address of the control device of the first packet network section in such an information element or parameter may indicate that said control device can support the inventive method so that a separate indication of this ability

Sample call set-up messages are ISDN: SETUP or ISUP: IAM, which allow both a parameter called user-to-user information (UUI) and / or an ISDN sub-address, which is transmitted in the ISUP using the transport parameter of application (APP). These information elements or parameters allow the "user", which in this case is the first gateway 116, to specify any information for transport to another user, which in this case is the second gateway 126. When the subaddress parameter is used , the information to be transferred has to be encoded in a numerical format since the subaddress parameter only supports digits. Of course, two or more transport mechanisms can be used simultaneously to prevent the loss of information in the event that any TDM switch along the route through section 140 of the TDM network discards any of said transport mechanisms. It is understood that the information may be transported in the application transport parameter (ATP, Application Transport Parameter) not only through subaddress, but also in any other form supported by the application transport parameter (ATP).

In an alternative embodiment, said element or Information parameter is transmitted using any message exchanged after call establishment message initial.

In stage 4, the information is transported in section 140 of the TDM network transparently, in the preferred embodiment by means of ISUP: IAM containing the application transport parameter or user information to Username.

In step 5, a termination node 114 TDM send a call establishment message to the second 126 TDM gateway using any TDM signaling protocol known as ISDN, ISDN user part (ISUP) or part of telephone user (TUP). This setting message from call contains the generated information element or parameter originally on the first 116 TDM gateway.

In step 6, if the second gateway 126 TDM the second gateway is implemented according to the present invention 126 TDM recognizes that the first 116 TDM gateway can support the inventive method The second gateway 126 TDM extracts the information of the information element or parameter, for example the IP address and the call reference of the first TDM gateway, and uses it to request a connection for all packages from the second section 120 of packet network through the second device 128 packet switching, area packet network 130 extensive, and the first packet switching equipment 118 up to the first gateway 116 TDM in the first section 110 of network of packages. In this connection request, the second gateway 126 TDM can specify information such as its own set of capabilities to negotiate connection parameters, your own packet network address, call reference of the first TDM gateway, and its own unique call reference for Identify the ongoing call on the second gateway 126.

In stage 7, the first gateway 116 TDM respond to the connection request using, for example, a SIP message: INVITE.

In step 8, the connection request is forwards to second software switch 124, and more particularly to a call agent residing in the second software switch 124.

In step 9, the connection request is delivery to the equipment 122 terminal of the second subscriber.

Upon acceptance of the connection request incoming, the call can be established in step 10 of a way for all packages as indicated by a line discontinuous

Optionally, the TDM call can be released in any time during or after stage 7 to release the resources used for call establishment in the section 140 TDM network. If the call is not released, the gateway 126 TDM you should return an ACM message to the 116 TDM gateway through the TDM switching node 144 and node TDM 142.

Figure 2 represents a network 100 'which is essentially similar to the network 100 of Figure 1. In Figure 2, The ability to carry out the present invention does not reside in the gateways 116A, 126A TDM, but instead is implemented in the 114A, 124A software switches.

Next, it will be described with reference to the numbers 1'to 10 'a sequence of events that occur in the 100 'network. It will be noted that the numbers 1 'to 10' do not indicate a flow full call but instead show events, messages and general notifications that facilitate the inventive method.

The procedure begins again with the subscriber A by dialing the PSTN directory number of subscriber B using, for example, a numeric keypad of the first computer 112 terminal, which can be an IP-enabled phone such as a SIP terminal

In stage 1 ', a corresponding establishment message, for example a message SIP: INVITE, to a first software switch 114A through the First section 110 packet network.

In step 2 ', a call agent residing in the first software switch 114A requests that the first gateway 116A TDM establish a connection with the switch 142 TDM and propagates the call establishment to the first switch 142 TDM through the TDM gateway 116A, a signaling gateway apart (not shown) or through a signaling transfer point (STP signaling transfer point) (not shown). An STP interconnection between the software switch and the TDM switch can optionally be used to transfer the SS7 call signaling when the software switch directly provides SS7 interfaces. An signaling gateway can optionally be used to transfer the SS7 call signaling when the software switch does not provide SS7 interfaces. In another case, the 116A TDM gateway is used to relay call signaling.

The first software switch 114A also transfers, in step 2 ', the following information to the first 142 TDM switch for additional transfer to the second 144 TDM switch and the second software switch 124A: a indication that the first section 110 of packet network supports the inventive method; an address, for example an IP address, of the control device that controls the call in the first section 110 packet network, which in this case is the first software switch 114A; and / or a single call reference to identify the ongoing call on the first switch 11A of software. It is understood that some of this information may implicitly transmitted For example, the presence of the address of the control device of the first network section of packages in such item or parameter information can indicate that said control device can support the method inventive so that a separate indication may not be necessary of this capacity

In step 3 ', the first switch 142 TDM receives a call establishment message generated by the software switch 114A from the 116A TDM gateway, from a separate signaling gateway (not shown) or from an STP (no shown) using any TDM signaling protocol known as ISDN, ISDN user part (ISUP) or part of telephone user (TUP). The 142 TDM switch translates the numbers and information contained for routing purposes and billing. This call establishment message contains information elements or parameters that will be propagated in a way transparent through section 140 of the TDM network. The element of information carries the information provided by the first 114A software switch.

Call establishment messages by way of example are ISDN: SETUP or ISUP: IAM, which allow both a parameter called user-to-user information (UUI) and / or a sub-address ISDN, which is transmitted in the ISUP using the parameter of application transport. These elements or parameters of information allow the "user", which in this case is the first gateway 116A, specify any information for the transport to another user, which in this case is the second gateway 126A. When the subaddress parameter is used, the information to be transferred has to be encoded in a numeric format since the subaddress parameter only supports digits Of course, two or more can be used simultaneously transport mechanisms to prevent the loss of information in case any TDM switch along the route through of section 140 of the TDM network will discard any of these transport mechanisms It is understood that the information can transported in the application transport parameter (ATP) no only through subdirections, but also from any other form supported by the application transport parameter (ATP).

In an alternative embodiment, said element or Information parameter is transmitted using any message exchanged after call establishment message initial.

In stage 4 ', the information is transported in section 140 of TDM network transparently, in the embodiment preferred by ISUP: IAM that contains the parameter of application or user-to-user information transport.

In step 5 ', a termination node 114 TDM send a call establishment message to the second 126A TDM gateway, to a second signaling gateway (no shown) or to a second STP (not shown) using any TDM signaling protocol known as ISDN, part of ISDN user, or part of the telephone user (TUP). This call establishment message contains the item or information parameter originally generated by the first 116A TDM gateway.

In step 6 ', the second gateway 126A TDM, the second signaling gateway (not shown) or the second STP (no shown) forwards the call establishment request and the information element to the second software switch 124A.

In step 7 ', if the second switch 124A of software is implemented according to the present invention, the second software switch 124A recognizes that the first switch 114A Software can support the inventive method. The second software switch 124A extracts the information from the item or information parameter, for example the IP address and the call reference of the first software switch, and the use to request a connection for all packages from the second section 120 of packet network through the second packet switching equipment 128, packet network 130 large area, and the first packet switching equipment 118 to the first software switch 114A in the first section 110 packet network. In this connection request, the second software switch 124A can specify information such as its own set of capabilities to negotiate the parameters of connection, your own packet network address, the reference of call of the first software switch, and its own reference of unique call to identify the current call in the second 124A software switch.

In step 8 ', the first switch 114A of software responds to the connection request using, by example, a SIP message: INVITE.

In step 9 ', the connection request is Forward to a call agent that resides on the second switch 124A software, which then delivers the connection request to the device 122 terminal of the second subscriber.

Upon acceptance of the connection request Incoming, the call can be established in step 10 'of a way for all packages as indicated by a line discontinuous

Optionally, the TDM call can be released in any time during or after stage 8 'to release the resources used for call establishment in the section 140 TDM network. If the call is not released, the second switch 124A software should return an ACM message to the first 114A software switch over the TDM 140 network that includes both the TDM switching node 144 and the TDM node 142.

In other embodiments of the invention, the teachings of the embodiments according to figures 1 and 2 can be combined so that the inventive method is controlled in a TDM gateway in any of the packet network sections and a software switch on the other.

In some applications, it may be desirable complete the TDM call setup and also set a TDM connection according to known methods. This can be achieved easily skipping the optional step of releasing the connection TDM

From the detailed description above it will be apparent to those skilled in the art how to apply the principles of the present invention to select others suitable control devices in the network sections of packages to control the inventive method.

Although the invention has been described using the Session Initiation Protocol as an example packet network protocol, other protocols can be used without departing from the present invention.

It will be appreciated that the teachings of the present invention apply in various other network arrangements that include, but are not limited to, network provisions that include a large number of subscribers, which can also be mobile, and / or network arrangements in which the wide area packet network and either or both packet network sections form a single net.

Claims (16)

1. Method to establish a call on a network (100) of telecommunications, comprising the network (100) of telecommunications a first and a second section (110, 120) of packet network, a section (140) of TDM transit network coupled to the first and second sections (110, 120) of packet network and a network (130) of wide area packets coupled to the first and second sections (110, 120) of packet network, comprising the Method the stages of:

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provide, in a first team (112) terminal coupled to said first packet network section (110), dialed digits, representing the dialed digits a number of directory of a second device (122) terminal coupled to said second section (120) of packet network;

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start setting up a first connection through the TDM transit network (140) with the second network (120) of packets according to said dialed digits, in the that at least one message or information element to the second network section (120) of packages, the at least one message or element of being indicative information on the package capabilities of the first terminal equipment and / or an address of a first control device (116, 114A) which controls the call in the first section (110) of the network of packages;

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in the second network (120), receiving said at least one message or element of information in a second control device (126, 124A) that controls the call in the second section (120) of packet network; Y

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establish, by means of the first and second device (116, 114A, 126, 124A) of control and information extracted from said at least a message or information element, a second connection (10) between the first and second equipment (112, 122) terminal through the network (130) of wide area packages.

2. A method according to claim 1, further comprising the step of releasing the resources of the TDM transit network section used during the call establishment through the transit network section (140)
TDM 3. Method according to any of the previous claims, wherein the at least one message or information element is also indicative of a provider of said first terminal equipment (112). 4. Method according to any of the previous claims, wherein the at least one message or information element is the user information parameter to user or protocol application transport parameter ISUP 5. Method according to claim 4, wherein the application transport parameter transmits the capabilities of package of the first terminal equipment and / or the address of a first control device that controls the call in the first section packet network encoded as ISDN subdirection. 6. Telecommunications network (100), which understands:

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a first and second section (110, 120) of network of packages;

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a section (140) of TDM transit network coupled to the first and second sections (110, 120) of packet network;

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a network (130) of wide area packets coupled to the first and second sections (110, 120) of packet network;

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a first terminal equipment (112) coupled to said first section (110) packet network to provide dialed digits, representing the dialed digits a directory number of a second terminal equipment (122) coupled to said second section (120) packet network;

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media to start establishing a first connection through the TDM transit network (140) with the second packet network (120) according to said dialed digits, in which during establishment at least one message or information item is called transmits to the second section (120) of packet network, being indicative of the at least one message or information element of the package capabilities of the first terminal equipment and / or an address of a first control device (116, 114A) that controls the call in the first section (110) of packet network;

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in the second network (120), means for receiving said at least one message or information element in a second device (126, 124A) of control that controls the call in the second network section (120) of packages; Y

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at first and / or second control device (116, 126, 114A, 124A), means to establish a second connection between the first and second device (112, 122) terminal through the network (130) of wide area packages according to the information extracted from said to minus a message or item of information.

7. Telecommunications network (100) according to claim 6, further comprising means for releasing the resources of the TDM transit network section used during the call establishment through network section (140) of TDM transit 8. Telecommunications network (100) according any one of claims 6 or 7, wherein the at least one message or information element is indicative in addition to a supplier of said first terminal equipment (112). 9. Telecommunications network (100) according any one of claims 6 to 8, wherein the at least one message or information element is the information parameter of user to user or the application transport parameter of the ISUP protocol 10. Telecommunications network (100) according to the claim 9, wherein the application transport parameter transmits the packet capabilities of the first terminal equipment and / or the address of a first control device that controls the called in the first packet network section encoded as ISDN subdirectory. 11. Control device (116, 114A) for control calls in a first packet network or network section (110) of packages, comprising:

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media to interconnect with a section (140) of TDM transit network, said section (140) of TDM transit network further coupled to a second section (120) of packet network;

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media to interface with a network (130) of large area packets, said network (130) of wide area packets also coupled to said second section (120) of packet network;

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media to start establishing a first connection through the TDM transit network (140) with the second network (120) of packages according to the digits dialed on a first device (112) terminal coupled to said first packet network section (110), in which the dialed digits represent a directory number of a second terminal equipment (122) coupled to said second section (120) packet network and in which during the establishment of called the control device (116, 114A) creates at least one message or information element and is transmitted to the second packet network section (120), the at least one being indicative message or information element of the package capabilities of the first terminal equipment and / or an address of the control device so that upon receipt of said at least one message or information element in a control device (126, 124A) similar that controls the call in the second section (120) packet network, a second one can be established connection (10) between the first and second terminal equipment through of the network (130) of wide area packets according to the information extracted from said at least one message or element of information.

12. Control device (116, 114A) for control calls in a first packet network or network section (110) of packages, comprising:

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media to interconnect with a section (140) of TDM transit network, said section (140) of TDM transit network further coupled to a second section (120) of packet network;

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media to interface with a network (130) of large area packets, said network (130) of wide area packets also coupled to said second section (120) of packet network;

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media to respond to an incoming connection establishment received from the TDM transit network (140) but that comes from the second network (120) of packets according to the dialed digits in a second terminal equipment (122) coupled to said second network section (120) of packages, in which the dialed digits represent a number directory of a first terminal equipment (112) coupled to said first section (110) of packet network and in which during the call establishment at least one message or item of information created by the control device (126, 124A) in the second packet network section is transmitted to the device (116, 114A) of control, the at least one message or is indicative information element of the second packet capabilities terminal equipment and / or a device address (126, 124A) of control in the second packet network section so that after the reception of said at least one message or information element in the control device (116, 114A), a second connection (10) between the first and second terminal equipment a through the network (130) of wide area packages according to the information extracted from said at least one message or element of information.

13. Device (116, 126, 114A, 124A) of control according to any of claims 11 or 12, which it also includes means to release the resources of the section of TDM transit network used during call establishment through section (140) of TDM transit network. 14. Device (116, 126, 114A, 124A) of control according to any of claims 11 to 13, wherein the at least one message or information element is also indicative of a supplier of said first equipment (112) terminal. 15. Device (116, 126, 114A, 124A) of control according to any of claims 11 to 14, wherein the at least one message or information element is the parameter of user-to-user information or the transport parameter of ISUP protocol application. 16. Device (116, 126, 114A, 124A) of control according to claim 15, wherein the parameter of application transport transmits the package capabilities of the first terminal equipment and / or the address of a first device control that controls the call in the first network section of packets encoded as ISDN subdirection.